And it can be challenged in the judicial system.
Checks and balances...just sayin.
But until then, it's effective.
And autr is right. They never taketh away. Just like aca which was a total farce. They must have threatened to rape Roberts entire family for him to come up with that cockamamie redefine of the legislation as a tax. And when your favorite candidate puts activist judges on the Scotus those checks and balances will be essentially non existent.